If your car has a starter relay its going to be in the fuse box thats under the hood.I didn't think Hondas had a starter relay but you can check anyways. Also when did you last replace your starter? You could just have a bad starter. If it keeps happeneing give it a good smack (I did this based on what i was told by someone on this sight) if it starts right up its a high possibility that your starter is going bad.